ZES ZIMMER Electronic Systems GmbH

What ZES ZIMMER Electronic Systems GmbH does

ZES ZIMMER Electronic Systems GmbH is a privately-held German manufacturer of high-precision power analyzers, headquartered in Oberursel near Frankfurt. For more than 30 years the company has focused exclusively on broadband single- and three-phase power measurement, with no diversification outside this niche. Its core product is the LMG600 series (LMG611, LMG641, LMG670/LMG671, including the LMG671-ATE configuration for automated test), differentiated by proprietary DualPath measurement architecture, the S3 channel optimized for DC, LMG Sample Vision signal-analysis software, an event-trigger option, and a bi-directional CAN interface. The company also distributes Danisense high-precision zero-flux current transducers (ranging from sub-600A up to and beyond 3000A), HST and PCT current sensors, LMG-control software, and compliance test systems with CE-conformity accessories.

The company operates a B2B hardware-led business with multiple recurring or attached revenue streams: accredited DAkkS calibration services (DIN EN ISO/IEC 17025, traceable to PTB and recognized under ILAC MRA), software licenses (LMG-CONTROL and LMG600 Control), application consulting billed by engineers' standard cost rates, and short-term equipment rentals credited toward purchase. Go-to-market combines direct enterprise sales from Oberursel with application-engineering support and a regional distributor network covering the USA (Testforce), Thailand (Electronics Solution), South Korea (BesTEQ), the UK (AR UK), Italy, and China. Customers operate in R&D and quality assurance for electric and electronics, test and calibration laboratories, universities and research institutions, and within EV testing, renewable energy, and industrial automation use cases.

Since 2025, ZES ZIMMER has operated as a wholly-owned subsidiary of Rohde & Schwarz following a strategic acquisition. The company continues to manufacture and sell under its existing brand, while participating in the PowerizeD European research consortium and supplying instruments into EV, renewable, and standards-compliance workflows. Headcount is reported in the 51-100 range, and revenue is not publicly disclosed.

Name

ZES ZIMMER Electronic Systems GmbH

Legal name

ZES ZIMMER Electronic Systems GmbH

Website

https://zes.com

Company type

Private

Founded year

1993

Operating status

Operating

Headcount range

51–100 employees

Short description

ZES ZIMMER Electronic Systems GmbH, based in Oberursel, Germany, manufactures high-precision broadband single- and three-phase power analyzers in the LMG600 series for R&D, quality assurance, and compliance testing in EV, renewable energy, industrial automation, and calibration laboratories worldwide.

Ownership category

akta.pro rank

Product category

Precision Power Analyzers (Test and Measurement Instruments)

NAICS

Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515), Testing Laboratories and Services (54138), Other Measuring and Controlling Device Manufacturing (334519)

SIC

Instruments For Meas & Testing Of Electricity & Elec Signals (3825), Industrial Instruments For Measurement, Display, And Control (3823), Services-Testing Laboratories (8734)

akta.pro primary industry

Test & Measurement Equipment (Oscilloscopes, DAQ, signal analyzers, calibration benches) (IMAGAFAC)

akta.pro secondary industry

Metrology, Calibration & Testing Equipment (Balances, pH/DO, Standards) (HLAGAIAL)

Keywords

• Precision power analyzers
• Broadband power measurement
• Electrical power analysis
• Current sensors transducers
• Compliance test systems

Headquarters

HQ city

Oberursel

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Technology or R&D, Supply Chain, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Precision Power Analyzers: Sale of high-precision power analyzers (LMG series) representing the core product line. Devices are sold directly and through distributors worldwide.
2. Sensors and Current Transducers: Sale of HST, PCT and other current sensors including Danisense products for precision current measurement.
3. Software Licenses: Sale of software including LMG-CONTROL and LMG600 Control for power analyzer operation and data analysis.
4. Calibration Services: Accredited calibration services (DAkkS DIN EN ISO/IEC 17025) for power measurement devices, including both factory calibration and accredited calibration covering AC current, AC voltage, and electrical power.
5. Application Consulting: Technical consulting services by development and application engineers to support customers in solving measurement tasks, billed according to standard cost rates.
6. Equipment Rental: Short-term rental of measurement equipment for specific measurement tasks or to evaluate products before purchase. Rental payments can be credited toward purchase.
7. Compliance Test Systems: Complete compliance test systems and accessories for CE conformity testing.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

ZES ZIMMER designs, develops, manufactures, and sells broadband single-/three-phase precision power analyzers under its LMG series (LMG671, LMG641, LMG611, LMG671-ATE), along with HST and PCT current sensors, Danisense-branded high-precision zero-flux current transducers, CE compliance test systems, and LMG-CONTROL/LMG600 Control software. The company also offers DAkkS-accredited calibration services and application-engineering consulting to support R&D, quality assurance, and standards-compliance testing for electric and electronics manufacturers, test laboratories, and universities.

Product overview

ZES ZIMMER Electronic Systems GmbH is a precision power measurement company offering the LMG series of high-precision power analyzers as its core product line. The portfolio includes LMG671, LMG641, LMG611, and LMG671-ATE models as current products, complemented by various current sensors (HST, PCT), Danisense-branded current transducers and monitoring products, compliance test systems with CE conformity accessories, LMG-CONTROL and LMG600 Control software applications, LMG accessories and measuring adaptors, and predecessor products. The company specializes in broadband single-/three-phase precision power analyzers for R&D, quality assurance, and compliance testing applications across electric vehicle testing, renewable energy, and industrial automation sectors.

Differentiator

Problem solved

Functional benefit

Brands

• LMG Series: High-precision power analyzer product line including LMG671, LMG641, LMG611, LMG671-ATE, and predecessor models.

Products and services

• LMG671 Precision Power Analyzer Flagship broadband single-/three-phase precision power analyzer with 10.1-inch touch display and USB 3.0, designed for R&D, quality assurance, and compliance testing in the electric and electronics industry.
• LMG641 Precision Power Analyzer

Quantifiable outcome

• Measurements traceable to national and international standards (PTB)

Named customers3 records

Segments6 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration4 records

Feature7 records

Partnerships

Seven partnerships are on record, tiered minor, regional and strategic.

• REGATRONminorStrategic or Co-development PartnerJoint exhibition stand at EMV Exhibition 2025, demonstrating collaboration between power analyzer and power supply technologies for EMC testing applications.
• BesTEQ KorearegionalChannel Partner/ Reseller/ DistributorDistribution agreement for South Korea, expanding market presence in the Korean market.
• Electronics SolutionregionalChannel Partner/ Reseller/ DistributorDistribution partner for Thailand with certified technical product training conducted by ZES ZIMMER.
• TestforceregionalChannel Partner/ Reseller/ DistributorDistributor of ZES ZIMMER product line in USA, enabling market coverage in North America.
• DanisenseminorChannel Partner/ Reseller/ DistributorExclusive distribution of Danisense High Precision Zero Flux Current Sensors in Germany. Danisense products include residual current monitoring, current transducers (0A to 600A, 600A to 3000A, over 3000A), power supplies, and cables.
• AR UKregionalChannel Partner/ Reseller/ DistributorDistributor in United Kingdom presenting LMG640 at Advanced Engineering UK and Motiv8 Forums events.
• PowerizeD ConsortiumstrategicStrategic or Co-development PartnerZES ZIMMER participates in the PowerizeD consortium, a European research initiative focused on power electronics. Company attended first project review meeting and is actively involved in consortium activities.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Yokogawa Electric: Yokogawa's WT series precision power analyzers are a direct competitor to ZES ZIMMER's LMG line, serving overlapping R&D, QA, and compliance customers in EV, renewable energy, and industrial automation with comparable broadband single/three-phase measurement capabilities.
• Hioki: Hioki offers the PW3198 and related power quality and power analyzers that compete head-to-head with LMG in precision power measurement, particularly in electrical equipment R&D and energy-efficiency applications across Asia and globally.
• Keysight Technologies: Keysight's PA2200 series power analyzers target the same precision power measurement use cases as ZES ZIMMER, with Keysight's broader T&M portfolio and global direct-sales force creating direct competitive overlap in EV, renewable, and electronics test markets.
• Newtons4th (N4L): N4L specializes in PPA-series precision power analyzers with comparable broadband accuracy claims, competing directly with LMG in laboratory and production test for power electronics, motors, and inverters.

Broad incumbents

• Rohde & Schwarz: Now the parent company of ZES ZIMMER, Rohde & Schwarz is a broad-line T&M giant whose oscilloscopes, power analyzers, and EMC test systems overlap with LMG applications. Strategic acquirer and broader portfolio competitor in the same customer accounts.
• Tektronix: Tektronix (part of Fortive) sells oscilloscopes and increasingly integrated power analysis solutions used in EV, renewable, and industrial power electronics R&D — a broader-portfolio alternative to standalone precision analyzers like LMG.
• Fluke (Fortive): Fluke's power quality analyzers and electrical test tools address adjacent applications in field power measurement and energy auditing, competing for some of the same EV-charging and industrial-automation customers as LMG.

Emerging players

• Chroma Systems Solutions: Chroma provides power electronics test instruments and regenerative AC/DC sources used in EV and renewable test, partially overlapping with LMG in inverter and converter test setups where customers can choose either vendor.
• Vitrek: Vitrek manufactures high-voltage power analyzers and meter calibrators (V7 series, 4700) that compete with LMG in precision AC power measurement and standards laboratories, particularly for higher-voltage applications.

Regional players

• AMETEK Programmable Power: AMETEK's California Instruments and Elgar brands offer power sources and analyzers used in compliance and avionics test, partially overlapping with LMG in standards-driven power measurement workflows.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/zeszimmer

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ZES ZIMMER Electronic Systems GmbH